Valve mechanism for compound locomotives.



E. L RAGONNET. VALVE MECHANISM FOR COMPOUND LOCOMOTIVES.

APPLICATION FILED JUNE 20, 1912.

Patented Apr. 22, 1913.

EUGENE L. RAGONNET, QF PHILADELPHIA, PENNSYLVANIA, ASSIGNOE TO THEBALDWIN nooomorivii worms, or PORATION or rnNivsYLva-nm.

PHILADELPHIA, PE1 \TNSYLVANIA, A

VALVE MECHANISM FOR COMPOUND LOCOMOTIVES.

Specification of Letters Patent.

Patentedjlpr. 22, Emit-E,

Application field June 20, 1912. Serial No. 704,801.

To all whom, it may concern.

Be it known that I, EUGENE L. RAGONNET, a citizen of the Republic ofFrance, residing in Philadelphia, county of Philadelphia, State ofPennsylvania, have invented certain Improvements in Valve Mechanism forCompound Locomotives, of which the following is a specification.

My invention relates to certain improvements in valve mechanism forcompound engines, known as the" Mallet type, 2'. a,

- a locomotive in which there are two frames pivotally connected at thecenter and both supporting the locomotive boiler. On the rear frame, inthe present instance, is the high pressure cylinder and on the forwardf-rame is the low pressure cylinder. Each of these frames carries itsown driving mechanism and .both mechanisms are controllec by a singlemechanism at the cab.

The object of my invention is to provide means whereby one valvemechanism can be moved independently of the other, so to regulate thecut off. This is accomplished by mechanism at the cab.

In the accompanying drawings :Figure 1, is aside view of a locomotive indiagram, illustrating my invention; Fig. 2, is a sectional view of partof the shifting mechanism shown in F ig. 1; and Fig. 3, is a viewlooking in the direction of the arrow, Fig. 2.

Referring to the drawings, 1 is the rear frame of the locomotive.

2 is the forward frame.

3 3 are the driving wheels of the rear frame and 4, i are the drivingwheels of the forward frame.

5 is the locomotive boiler, which extends over both frames, and 6 is thecab of the locomotive.

On each side of the rear frame are the high pressure cylinders 7, and oneach side of the forward frame are the low pressure cylinders 8.

9 is the valve mechanism of the high pressure cylinders 7, and 10 is thevalve mechanism of the low pressure cylinders 8.

As before remarked, the usual practice vis to move both of the valvemechanisms in unison through a cylinder 18, which is controlled by alever 12 in the cab of the locomotive.

On a shaft 13, mounted in suitable bearings in the frame of thelocomotive, is an arm l i, which is connected by a rod 15 to a slide 16to which the piston rod 17 is con nected. This piston rod has a pistonadapted to a controlling cylinder 18 which is provided with a valvemechanism, the valve rod 19 of which is pivotally attached to lever 20and this lever is in turn connected by a link 21 to a lever 22 andattached to the outer end of this lever is a rod which erg-- tends tothe operating lever 12 in the cab of the locomotive.

The rock shaft 13 has an arm EZ-il connected by a link 25 to the valvemechanism 9 of the high pressure cylinder 7. This valve mechanism is ofthe ordinary type and is controlled solely by the movement of the lever12 in the cab of the locomotive. Also on this rock shaft 13 is a slottedarm 26, which actuat-es the valve mechanism 10 of the low pressurecylinder 8.

in order to vary the out off of the low pressure cylinder,'1 mounton theshaft 13 a sleeve 27 having an arm 28 on which is a swiveled head 29having a threaded interior, and extending through this threaded head isa rod 30, on the end of which is a screw thread adapted to the screwthread in the head. This rod extends to the cab of the locomotive and isprovided with a hand lever 31 by which it is turned; the turning of therod causes the sleeve 27 to berocked on its pivot. On the sleeve 27 isan arm 32 connected by a link to rod 34-. Pivoted to the end of this rodis a block 35 adapted to the slot in the arm 26,

so thnt,'upon turning the rod 30, the block The,

35 will be raised or lowered in the slot. rod 34: is connected to a rod36 by a swivel joint in the present instance, and the rod 86 is in turnconnected to an arm 37 of a bell crank lever pivoted to the frame; theother arm 38 of the bell crank lever being connected by a link 39 to therod 40 of the valve mechanism 10. It will be seen, therefore, that byadjusting the block 35 in its slot in the arm 26, more or less throw canbe given to the lever of the valve mechanism, so as to regulate the cutoff of the low pressure cylinder independently of the regulation of thecut off of the higl'i pressure cylinder, yet

both valves are controlled or operated from a single controlling deviceat the cab of the locomotive.

I claim 1. The combination in a locomotive of the Mallet type, of rearand forward frames pivotally connected; a high pressure cylinder on therear frame and a low pressure cylinder on the forward frame; valvemechanism for each cylinder; a controlling device on the rear frame foractuating both valves in unison; an adjustable device for regulating thecut off of the valve of the low pressure cylinder; and mechanismextending from the device to the cab of the locomotive.

2. The combination in a compound locomotiveof the Mallet type, of a.high pressure cylinder and a low pressure cylinder; valve mechanism foreach cylinder; a

rock shaft; controlling mechanism for ac.

tuating the rock shaft; said rock shaft being coupled directly to thevalve mechanism connected together; a high pressure cylinder on the rearframe; a low pressure cylinder on the forward frame; valve mechanism forthe cylinders; a. rock shaft having an arm a rod connected to the arm;controlling mechanism for actuating the rock shaft through the arm andthrough the rod; a second arm on the rock shaft connected directly tothe valve mechanism of the low pressure cylinder; and a third armon therock shaft; said arm being slotted; with a block mounted in the slot;arod connected to the block and to the valve mechanism of the lowpressure cylinder; a sleeve on the rock shaft; an arm on the sleeve; alink connecting the arm with the rod leading to the low pressurecylinder; a second arm on the cylinder carrying a threaded head; and athreaded rod adapted to the head and extending to the cab of thelocomotive, so that, upon turning the rod, the block in the slotted armof the rock shaft will be raised or lowered to vary the out off of thelow pressure cylinder.

t. The combination in a locomotive of the Mallet type, of rear andforward frames pivotally connected; a high pressure cylinder on the rearframe; a low pressure cylinder on the forward frame; a rock shaft hav-'ing three arms; one of said arms being con nected to valve actuatingmechanism controlled from the cab of the locomotive; a second armconnected to the .valve mechanism of the high pressure cylinder; a thirdarm connected. to the low pressure cylinder; a block adapted to saidthird arm; a rod connected to the block; a sleeve mounted on therockshaft having two arms; a rod connected to one arm and extending tothe cab of the locomotive; a link connected to the other arm and to therod extending to the low pressure valve mechanism; with means foractuating the rod leading to the cab so as to shift the block on thethird arm of the rock shaft to vary the. cut off of the low pressurecylinder.

In testimony whereof, Ihave signed my name to this specification, in thepresence of two subscribing witnesses.

Witnesses:

,Jos. H. KLEIN, WM. A. BARR.

EUGENE L. RAGONNET.

